Funny thing about legal and Illegal,, Police officers dont always know the law, even if they do and whilst it may be legal, Its down to the individual officer to interpret the legality..
Theres a story of a young lad, carried his legal carry knife everywhere, no issues, got stopped whilst trespassing, went with the whole civil offence malarkey, as Im sure we all do... Low and behold, Arrested for carrying a bladed artefact, Making it Armed Trespass.. Moral of the story, leave it at home.. Even If you get no further action, not worth the hassle. THE END.